Frame for a respiratory mask



FIG. 1 is a front perspective view of a frame for a respiratory maskaccording to an embodiment of our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof, with the right side view beingidentical thereto; and,

FIG. 7 is a rear perspective view thereof.

The ornamental design for a frame for a respiratory mask, as shown.